Ami bornand meylan



I (No Model.) 7

A. B. MEYLAN.

MUSICAL BOX.

No. 400,104. Patented Mar. 20, 1889..

will/ 1 155565.

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Phm-uuw m mr, Washington. D. c,

UNITED STATES PATENT OFFICE.

AMI BORNAND MEYLAN, OF STE. CROIX, SWITZERLAND.

MUSICAL BOX.

SPECIFICATION forming part of Letters Patent No. 400,104, dated March 26, 1889.

Application filed August 31, 1888. Serial No. 284,309. (No model.)

To all whom it may concern.-

Be it known that I, AMI BORNAND MEYLAN, a citizen and subject of the Republic of Switzerland, residing at Ste. Croix, Canton de Vaud, Switzerland, have invented certain new and useful Improvements in the Mechanism of Musical Boxes; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Heretofore the mainspring which furnishes the motive power of the mechanism of musical boxes has been contained in a small barrel at or near one end of the cylinder and gearing with the pinion of the cylinder-shaft. The shaft itself, to which the cylinder is attached and upon which it revolves, has uniformly been a straight bar passing through the cylinder longitudinally at its axis and bearing upon the raised bearings of the bedplate. 1

In my improvements the separate barrel containing the mainspring and gearing with the pinion of the cylinder-shaft, is dispensed with. The cylinder-shaft is also dispensed with. The cylinder is made to revolve upon two restbars, which enter the center of the cylinder at the ends, the one at the extremity of the cylinder farthest from the mainspring as placed in my improvement being fixed to the raised portion of the bed-plate, the other being the shaft to which the spring is attached and which is also fixed, bearing upon the raised portion of the bed-plate at this end of the cylinder, except when the spring is being wound up.

The mainspring, which furnishes the motive power and causes the cylinder to revolve, is placed at one end and inside of the cylinder. One end of the spring is rivet-ed or otherwise attached to the cylinder on the inside. The other end is attached to a shaft which also forms the rest upon which this end of the cylinder revolves, as above described. The ratchet-wheel, by means of which the mainspring is held at a tension, is placed outside the bearing on the prolongation of this shaft.

The catch or ratchet is fastened to the bedplate. It is constructed of a single piece of metal, so as to form at the same time a spring and catch or ratchet, which works in the ratchet-wheel without the aid of a separate spring.

The mainspring is wound up by means ofa key which is placed upon the extreme end of the prolongation of the shaft to which the spring and ratchet-wheel are attached and upon the other end of which the cylinder revolves, as above described.

Having described the improvements I have invented and specified the means whereby the mechanism containing them is operated, what I desire to claim, and secure by Letters Patent, 1S-v' 1. A device in the mechanism of musical boxes provided with the following elements,

constructed and arranged as described, to wit: a cylinder revolving upon two rest-bars which enter the center of the cylinder at the ends, the bar at the extremity of the cylinder farthest from the mainspring being fixed to the raised portion of the bed-plate, the other being the shaft to which the spring is attached and which is also fixed (except when the spring is being wound up) and bears upon the raised portion of the bed-plate at this end of the cylinder, the mainspring,which furnishes the motive power and causes the cylinder to revolve, being placed at one end and inside of the cylinder, with one end of the spring riveted or otherwise attached to the cylinder on the inside and the other end attached to the shaft that forms the rest upon which this end of the cylinder revolves, as above described.

2. A shaft in the end of the cylinder containing the mainspring, which serves both as a fixed rest upon which this end of the cylinder revolves and as the means by which the mainspring is wound up, one end of the spring being attached to the shaft, as above described.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

AMI BORNAND MEYLAN.

Witnesses:

'1. OAMPICHE BoURsIEE, L. ROPEIEE. 

